this detection can catch for third party application updates or installation. in this scenario false positive filter is needed.

Techniques

T1112

Sample rules

Windows Deleted Registry By A Non Critical Process File Path

source: splunk
technicques:
- T1112

Description

This analytic is to detect deletion of registry with suspicious process file path. This technique was seen in Double Zero wiper malware where it will delete all the subkey in HKLM, HKCU and HKU registry hive as part of its destructive payload to the targeted hosts. This anomaly detections can catch possible malware or advesaries deleting registry as part of defense evasion or even payload impact but can also catch for third party application updates or installation. In this scenario false positive filter is needed.

Detection logic


| tstats `security_content_summariesonly` count from datamodel=Endpoint.Registry WHERE Registry.action=deleted BY _time span=1h Registry.dest Registry.registry_path Registry.registry_value_name Registry.registry_key_name Registry.process_guid Registry.registry_value_data Registry.action 
| `drop_dm_object_name(Registry)` 
| join process_guid [
| tstats `security_content_summariesonly` count FROM datamodel=Endpoint.Processes WHERE NOT (Processes.process_path IN ("*\\windows\\*", "*\\program files*")) by _time span=1h Processes.process_id Processes.process_name Processes.process Processes.user Processes.parent_process_name Processes.parent_process Processes.process_path Processes.process_guid 
| `drop_dm_object_name(Processes)`] 
| fields _time parent_process_name parent_process process_name process_path process process_guid registry_path registry_value_name registry_value_data registry_key_name action dest user 
| `windows_deleted_registry_by_a_non_critical_process_file_path_filter`